function test ()
   name = "lavenliu"
   age = 28
   sex = "boy"
   return name, age, sex
end

print(test()) -- 直接调用该函数

name, age, sex = test()  -- 调用并赋值给name, age, sex三个变量
print("name is: " .. name)
print("age is: " .. age)
print("sex is: " .. sex)

